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/* d4lib.c
* Copyright (C) 2001 Jean-Jacques Sarton jj.sarton@t-online.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* this file will be a library, which will allow to use the EPSON
* Stylus Scanner and also allow to send commands to the
* Stylus Color 480/580.
*
* At this stage a lot of things are not implemented and the
* first goal is to get the Stylus Scanner printing.
* This may be reached if this file is compiled with the TEST
* option set.
*
* I dont own a Stylus Scanner and I am not able to test this
* code, as desired. Printing on a Stylus Photo 1290 work fine
* with this.
*
* The best way to get the Stylus Scanner working is to test
* this and also correct my possibly errors.
* Programming knowledge will be helpfull for this.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <ctype.h>
#include <sys/stat.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/time.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include "d4lib.h"
#include "rw.h"
#ifdef MACOS
#define USE_LIBUSB 1
#endif
#ifndef RDTIMEOUT
#define RDTIMEOUT 2000
#define WRTIMEOUT 2000
#endif
int d4WrTimeout = WRTIMEOUT;
int d4RdTimeout = RDTIMEOUT;
int ppid = 0;
extern int doRw;
int debugD4 = 0;
typedef void (*signalHandler_t)(int);
static int timeoutGot = 0;
static int _readData(int fd, uc socketID, uc *buf, int len);
/* commands for the D4 protokoll
Transaction Cmd Reply
-------------- ---- -----
Init 0x00 0x80
OpenChannel 0x01 0x81
CloseChannel 0x02 0x82
Credit 0x03 0x83
CreditRequest 0x04 0x84
Exit 0x08 0x88
GetSocketID 0x09 0x89
GetServiceName 0x0a 0x8a
Error 0x7f -
*/
/*typedef unsigned char uc;*/
typedef struct cmdHeader_s
{
uc psid;
uc ssid;
uc lengthH;
uc lengthL;
uc credit;
uc control;
uc command;
} cmdHeader_t;
typedef struct replyHeader_s
{
uc psid;
uc ssid;
uc lengthH;
uc lengthL;
uc credit;
uc control;
uc command;
uc result;
} replyHeader_t;
typedef struct init_s
{
cmdHeader_t head;
uc revision;
} init_t;
typedef struct initReply_s
{
replyHeader_t head;
uc revision;
} initReply_t;
typedef struct error_s
{
replyHeader_t head;
uc epsid;
uc essid;
uc ecode;
} error_t;
/* results */
typedef struct errorMessage_s
{
uc result;
char *message;
int errorClass;
} errorMessage_t;
#define RECOVERABLE 0
#define FATAL 1
static errorMessage_t errorMessage[] =
{
{ 0x01, "Unable to begin conversation, try later." ,0 },
{ 0x02, "Protokoll revision not supported." ,1 },
{ 0x03, "Transaction channel cant be closed." ,0 },
{ 0x04, "No sufficient resources available now." ,0 },
{ 0x05, "Connection denied." ,1 },
{ 0x06, "Channel already open." ,0 },
{ 0x07, "Credit overflow, previous credit remain valid." ,0 },
{ 0x08, "Channel is not open." ,1 },
{ 0x09, "Service not available on specified socket." ,1 },
{ 0x0a, "Service name to socket ID failed." ,1 },
{ 0x0b, "Init transaction failed." ,1 },
{ 0x0c, "Invalid packet size." ,1 },
{ 0x0d, "Requested packed size is 0, no data can be transferred.",0 },
{ 0x80, "Malformed packet, ignored." ,1 },
{ 0x81, "No credit for received packet, ignored" ,0 },
{ 0x82, "Reply dont match with outstanding command, ignored." ,1 },
{ 0x83, "Packet size greater as negotiated size." ,1 },
{ 0x84, "Data received for a non opened channel." ,1 },
{ 0x85, "Reply with unknown result value received." ,1 },
{ 0x86, "Piggybacked credit in data packet cause overflow." ,1 },
{ 0x87, "Unknown 1284.4 Reply." ,0 },
{ 0x00, NULL ,0 }
};
/*******************************************************************/
/* Function printHexValues */
/* */
/* Print hex code contained in the passed buffer */
/* */
/*******************************************************************/
void printHexValues(char *dir, uc *buf, int len)
{
int i;
fprintf(stderr,"%s",dir);
for ( i = 0; i < len;i++)
fprintf(stderr,"%02x ",buf[i]);
fprintf(stderr,"\n");
fprintf(stderr," ");
for ( i = 0; i < len;i++)
fprintf(stderr,"%c ",isprint(buf[i])&&!isspace(buf[i])?buf[i]:' ');
fprintf(stderr,"\n");
}
/*******************************************************************/
/* Function printError() */
/* print an error message on stderr */
/* */
/* Input: uc errorNb the error number */
/* */
/* Return: fatal = 1 or recoverable = 0 */
/* */
/*******************************************************************/
static int printError(uc errorNb)
{
errorMessage_t *msg = errorMessage;
if ( errorNb == 0 )
{
return 0;
}
while ( msg->result )
{
if ( msg->result == errorNb )
{
fprintf(stderr,"%s\n", msg->message);
return msg->errorClass;
}
msg++;
}
fprintf(stderr,"Unknown IEEE 1284.4 error number %d\n",errorNb);
return 1; /* non recoverable error */
}
/*******************************************************************/
/* Function printCmdType() */
/* print on stderr the command name */
/* Input: unsigned char *cmd the data are to be put here */
/* */
/* Return: - */
/* */
/*******************************************************************/
static void printCmdType(uc *cmd)
{
if ( cmd[0] == 0 && cmd[1] == 0 )
{
switch(cmd[6])
{
case 0: fprintf(stderr,"--- Init ---\n");break;
case 1: fprintf(stderr,"--- OpenChannel ---\n");break;
case 2: fprintf(stderr,"--- CloseChannel ---\n");break;
case 3: fprintf(stderr,"--- Credit ---\n");break;
case 4: fprintf(stderr,"--- CreditRequest ---\n");break;
case 8: fprintf(stderr,"--- Exit ---\n");break;
case 9: fprintf(stderr,"--- GetSocketID ---\n");break;
case 10: fprintf(stderr,"--- GetServiceName ---\n");break;
case 0x45: fprintf(stderr,"--- EnterD4Mode ---\n");break;
case 0x7f: fprintf(stderr,"--- Error ---\n");break;
default: fprintf(stderr,"--- ?????????????? ---\n");break;
}
}
else
{
fprintf(stderr,"--- Send Data ---\n");
}
}
/*******************************************************************/
/* Function writeCmd() */
/* write a commmand */
/* Input: int fd file handle */
/* char *cmd the data are to be put here */
/* int len the number of bytes to read */
/* */
/* Return: number of bytes write or -1 */
/* */
/*******************************************************************/
static int writeCmd(int fd, unsigned char *cmd, int len)
{
int w;
int i = 0;
int cnt;
# if PTIME
struct timeval beg, end;
long dt;
# endif
if ( debugD4 )
{
printCmdType(cmd);
# if PTIME
gettimeofday(&beg, NULL);
# endif
if ( cmd[0] == 0 && cmd[1] == 0 )
{
printHexValues("Send: ",cmd,len);
}
else
{
printHexValues("Send: ",cmd,6);
}
}
usleep(1); /* according to Glen Steward, this will solve problems */
/* for the cartridge exchange with the Stylus Color 580 */
timeoutGot = 0;
errno = 0;
cnt = 0;
while ( i < len )
{
#ifndef USE_LIBUSB
w = devWrite(fd, cmd+i,len-i, d4WrTimeout );
#else
w = mWrite(fd, cmd+i,len-i);
#endif
if ( w < 0 && errno == EAGAIN && cnt < 600 )
{
usleep(100000);
cnt++;
}
else if ( w < 0 )
{
if ( debugD4 )
{
fprintf(stderr,"Write error errno=%d ", errno);
perror("");
}
i= -1;
break;
}
else
i += w;
}
if ( debugD4 )
{
# if PTIME
gettimeofday(&end, NULL);
dt = (end.tv_sec - beg.tv_sec) * 1000000;
dt += end.tv_usec - beg.tv_usec;
fprintf(stderr,"Write time %5.3f s\n",(double)dt/1000000);
# endif
}
if ( timeoutGot )
return -1;
return i;
}
/*******************************************************************/
/* Function readAnswer() */
/* Read the datas returned by the printer */
/* Input: int fd file handle */
/* char *buf the data are to be put here */
/* int len the number of bytes to read */
/* */
/* Return: number of bytes read. -1 on error */
/* */
/*******************************************************************/
static int readAnswer(int fd, unsigned char *buf, int len)
{
int rd = 0;
int total = 0;
struct timeval beg, end;
long dt;
int count = 0;
/* wait a little bit before reading an answer */
usleep(20000);
/* for error handling in case of timeout */
timeoutGot = 0;
/* set errno to 0 in order to get correct informations */
/* in case of error */
errno = 0;
gettimeofday(&beg, NULL);
while ( total < len )
{
#ifndef USE_LIBUSB
rd = devRead(fd, buf+total, len-total, d4RdTimeout);
#else
rd = mRead(fd, buf+total, len-total);
#endif
if ( rd <= 0 )
{
gettimeofday(&end, NULL);
dt = (end.tv_sec - beg.tv_sec) * 1000;
dt += (end.tv_usec - beg.tv_usec) / 1000;
if ( dt > d4RdTimeout || errno )
{
if ( debugD4 )
fprintf(stderr,"Timeout 1 at readAnswer() rcv %d bytes %d ms\n",(int)total, (int)dt);
timeoutGot = 1;
break;
}
count++;
if ( count >= 20 )
{
timeoutGot = 1;
if ( rd == 0 )
errno = -1; /* tell that there is an abnormal condition */
break;
}
errno = 0;
continue;
}
else
{
total += len;
if ( total > 3 )
{
/* the bytes idx 2 and 3 contain the length */
/* in case of errors this may differ from */
/* the expected lenght. Setting len to this */
/* value will avoid waiting for timeout */
len = (buf[2] << 8) + buf[3];
}
}
}
if ( debugD4 )
{
# if PTIME
gettimeofday(&end, NULL);
# endif
printHexValues("Recv: ",buf,total);
# if PTIME
dt = (end.tv_sec - beg.tv_sec) * 1000000;
dt += end.tv_usec - beg.tv_usec;
fprintf(stderr,"Read time %5.3f s\n",(double)dt/1000000);
# endif
}
if ( timeoutGot )
{
if ( debugD4 )
fprintf(stderr,"Timeout 2 at readAnswer()\n");
return -1;
}
return total;
}
/*******************************************************************/
/* Function _readData() */
/* Read the datas returned by the printer */
/* Input: int fd file handle */
/* char *buf the data are to be put here */
/* int len the number of bytes to read */
/* */
/* Return: number of bytes read. -1 on error */
/* */
/*******************************************************************/
static int _readData(int fd, uc socketID, uc *buf, int len)
{
int rd = 0;
int total = 0;
struct timeval beg, end;
long dt;
/* set errno to 0 in order to get correct informations */
/* in case of error */
errno = 0;
/* read the first 6 bytes */
gettimeofday(&beg, NULL);
while ( rd == 0 )
{
#ifndef USE_LIBUSB
rd = devRead(fd, buf, len, d4RdTimeout);
#else
rd = mRead(fd, buf, len);
#endif
gettimeofday(&end, NULL);
dt = (end.tv_sec - beg.tv_sec) * 1000;
dt += (end.tv_usec - beg.tv_usec) / 1000;
if ( dt > d4RdTimeout*3 )
{
if ( debugD4 )
fprintf(stderr,"Timeout at _readData(), dt = %d ms\n",(int)dt);
return -1;
}
}
if ( debugD4 )
printHexValues("Recv: ",buf,rd);
total = rd -6;
if ( rd > 0 )
memcpy(buf, buf+6, total);
return total > 0 ? total : 0;
}
/*******************************************************************/
/* Function sendReceiveCmd() */
/* send a command and get the answer. */
/* Input: int fd file handle */
/* char *buf the data are to be put here */
/* int len the number of bytes to read */
/* */
/* Return: number of bytes read */
/* */
/*******************************************************************/
static int sendReceiveCmd(int fd, uc *cmd, int len, uc *answer, int expectedlen)
{
int rd;
if ( (rd = writeCmd(fd, cmd, len ) ) != len )
{
if ( rd < 0 ) return -1;
return 0;
}
rd = readAnswer(fd, answer, expectedlen );
if ( rd == 0 )
{
/* no answer from device */
return 0;
}
else if ( rd < 0 )
{
/* interrupted write call */
if ( debugD4 )
fprintf(stderr,"interrupt received\n");
return -1;
}
else
{
/* check result */
if ( answer[6] == 0x7f )
{
printError(answer[9]);
return -1;
}
else if ( answer[7] != 0 )
{
if ( printError(answer[7]) )
{
return -1;
}
return 0;
}
else
{
return rd;
}
}
}
/*******************************************************************/
/* Function EnterIEEE() */
/* send a command and get the answer. */
/* Input: int fd file handle */
/* */
/* Return: 0 on error 1 if all is OK */
/* */
/*******************************************************************/
int EnterIEEE(int fd)
{
uc buf[200];
uc cmd[] =
{
0x00, 0x00, 0x00, 0x1b, 0x01, '@', 'E', 'J', 'L', ' ',
'1', '2', '8', '4', '.', '4', 0x0a, '@', 'E', 'J',
'L', 0x0a, '@', 'E', 'J', 'L', 0x0a
};
int rd;
memset(buf, 0, sizeof(buf));
Loop:
if ( writeCmd(fd, cmd, sizeof(cmd) ) != sizeof(cmd) )
{
return 0;
}
rd = readAnswer(fd, buf, 8);
if ( rd == 0 )
{
/* no answer from device */
return 0;
}
else if ( rd < 0 )
{
/* interrupted write call */
return 0;
}
else
{
int i;
/* check result */
for (i=0; i < rd; i++ )
if ( buf[i] != 0 )
break;
if ( i == rd ) goto Loop;
return 1;
}
}
/*******************************************************************/
/* Function Init() */
/* handle the init command */
/* Input: int fd file handle */
/* */
/* Return: 0 on error 1 if all is OK */
/* */
/*******************************************************************/
int Init(int fd)
{
uc buf[20];
init_t cmd;
int rd;
cmd.head.psid = 0;
cmd.head.ssid = 0;
cmd.head.lengthH = 0;
cmd.head.lengthL = 8;
cmd.head.credit = 1;
cmd.head.control = 0;
cmd.head.command = 0;
cmd.revision = 0x10;
rd = sendReceiveCmd(fd, (uc*)&cmd, sizeof(cmd), buf, 9 );
return rd == 9 ? 1 : 0;
}
/*******************************************************************/
/* Function Exit() */
/* handle the Exit command */
/* Input: int fd file handle */
/* */
/* Return: 0 on error 1 if all is OK */
/* */
/*******************************************************************/
int Exit(int fd)
{
int rd;
uc buf[20];
cmdHeader_t cmd;
cmd.psid = 0;
cmd.ssid = 0;
cmd.lengthH = 0;
cmd.lengthL = 7;
cmd.credit = 1;
cmd.control = 0;
cmd.command = 8;
rd = sendReceiveCmd(fd, (uc*)&cmd, sizeof(cmd), buf, 8 );
return rd > 0 ? 1 : rd;
}
/*******************************************************************/
/* Function GetSocketID() */
/* handle the GetSocketID command */
/* Input: int fd file handle */
/* char *serviceName name of wanted service */
/* */
/* Return: 0 on error else the socket ID */
/* */
/*******************************************************************/
int GetSocketID(int fd, char *serviceName)
{
/* the service name may not be longer as 40 bytes */
int len = sizeof(cmdHeader_t) + strlen(serviceName);
uc buf[100];
uc rBuf[100];
int rd;
cmdHeader_t *cmd = (cmdHeader_t*)buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = len & 0xff;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 0x09;
strcpy((char*)buf+sizeof(cmdHeader_t), serviceName);
rd = sendReceiveCmd(fd, buf, len, rBuf, len+2);
if ( rd > 0 )
{
return rBuf[8];
}
else
{
return 0;
}
}
/*******************************************************************/
/* Function OpenChannel() */
/* handle the OpenChannel command */
/* Input: int fd file handle */
/* I/O: int *sndSz The size for sendig of datas */
/* int *recSz The size for receiving of datas */
/* */
/* Return: -1 on error or 1 if all is OK */
/* */
/*******************************************************************/
int OpenChannel(int fd, uc sockId, int *sndSz, int *rcvSz)
{
uc cmd[17];
uc buf[20];
int rd;
for(;;)
{
cmd[0] = 0; /* transaction sockets */
cmd[1] = 0;
cmd[2] = 0; /* len */
cmd[3] = 17; /* len */
cmd[4] = 1; /* credit */
cmd[5] = 0; /* control */
cmd[6] = 1; /* command */
cmd[7] = sockId; /* sockets # */
cmd[8] = sockId; /* sockets # */
cmd[9] = *sndSz >> 8; /* packet size in send dir */
cmd[10] = *sndSz & 0xff;
cmd[11] = *rcvSz >> 8; /* packet size in recv dir */
cmd[12] = *rcvSz & 0xff;
cmd[13] = 0; /* max outstanding Credit, must be 0 */
cmd[14] = 0;
cmd[15] = 0; /* initial credit for us ? */
cmd[16] = 0;
rd = sendReceiveCmd(fd, cmd, 17, buf, 16);
if ( rd == -1 )
{
return -1;
}
else if ( rd == 16 )
{
if ( buf[7] == 4 )
{
/* device cant allocate resources now */
continue;
}
else if ( buf[7] != 0 )
{
/* hard error */
return -1;
}
*sndSz = (buf[10]<<8) + buf[11];
*rcvSz = (buf[12]<<8) + buf[13];
break;
}
else
{
/* at this stage we can only have an error */
return -1;
}
}
return 1;
}
/*******************************************************************/
/* Function CloseChannel() */
/* handle the CloseChannel command */
/* Input: int fd file handle */
/* uc socketID he socket to close */
/* */
/* Return: -1 on error or 1 if all is OK */
/* */
/*******************************************************************/
int CloseChannel(int fd, uc socketID)
{
unsigned char buf[100];
int rd;
cmdHeader_t *cmd = (cmdHeader_t *)buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = 10;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 2;
buf[sizeof(cmdHeader_t)+0] = socketID;
buf[sizeof(cmdHeader_t)+1] = socketID;
buf[sizeof(cmdHeader_t)+2] = 0;
rd = sendReceiveCmd(fd, buf,10, buf, 10);
return rd == 10 ? 1 : rd;
}
/*******************************************************************/
/* Function CreditRequest() */
/* handle the CreditRequest command */
/* Input: int fd file handle */
/* uc socketID he socket to close */
/* */
/* Return: -1 on error else the credit got */
/* */
/*******************************************************************/
int CreditRequest(int fd, uc socketID)
{
int rd;
uc buf[100];
uc rBuf[100];
cmdHeader_t *cmd = (cmdHeader_t *)buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = 13;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 4;
buf[sizeof(cmdHeader_t)+0] = socketID;
buf[sizeof(cmdHeader_t)+1] = socketID;
buf[sizeof(cmdHeader_t)+2] = 0x00;
buf[sizeof(cmdHeader_t)+3] = 0x80;
buf[sizeof(cmdHeader_t)+4] = 0xff;
buf[sizeof(cmdHeader_t)+5] = 0xff;
rd = sendReceiveCmd(fd, buf, 13, rBuf, 12);
if ( rd == 12 )
{
/* this is the credit */
return (rBuf[10]*256)+rBuf[11];
}
else
{
return rd > 0 ? 0 : rd; /* there was an error */
}
}
/*******************************************************************/
/* Function Credit() */
/* give credit to the attached device */
/* Input: int fd file handle */
/* uc socketID the socket to close */
/* */
/* Return: -1 on error or 1 if all is OK */
/* */
/*******************************************************************/
/* needed for sending of commands (channel 2) or scanning */
int Credit(int fd, uc socketID, int credit)
{
int rd;
uc buf[100];
uc rBuf[100];
cmdHeader_t *cmd = (cmdHeader_t*)buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = 0x0b;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 0x03;
buf[sizeof(cmdHeader_t)+0] = socketID;
buf[sizeof(cmdHeader_t)+1] = socketID;
buf[sizeof(cmdHeader_t)+2] = credit >> 8;
buf[sizeof(cmdHeader_t)+3] = credit & 0xff;
rd = sendReceiveCmd(fd, buf, 11, rBuf, 10);
if ( rd == 10 )
{
return 1;
}
else
{
return 0;
}
}
/*******************************************************************/
/* Function askForCredit() */
/* Convenience function */
/* handle the CreditRequest command */
/* Input: int fd file handle */
/* uc socketID */
/* IN/Out int *sndSize for error handling */
/* IN/Out int *rcvSize for error handling */
/* */
/* Return: credit */
/* */
/* Remark: CreditRequest() will be called in a loop as long as */
/* the returned credit is 0 */
/* */
/*******************************************************************/
#define MAX_CREDIT_REQUEST 2
int askForCredit(int fd, uc socketID, int *sndSize, int *rcvSize)
{
int credit = 0;
int count = 0;
while (credit == 0 )
{
while((credit=CreditRequest(fd,socketID)) == 0 && count < MAX_CREDIT_REQUEST )
usleep(250000);
if ( credit == -1 )
{
if ( errno == ENODEV || count == MAX_CREDIT_REQUEST )
{
break;
}
credit = 0;
/* init printer and reopen the printer channel */
CloseChannel(fd, socketID);
if ( Init(fd) )
{
OpenChannel(fd, socketID, sndSize, rcvSize);
}
}
/* if the parent died, live this loop if credit not got */
if ( credit == 0 && getppid() == ppid )
return 0;
count++;
}
return credit;
}
/*******************************************************************/
/* Function writeData() */
/* Convenience function */
/* write the data to the device */
/* Input: int fd file handle */
/* uc socketID the deetination socket */
/* uc *buf the datas to be send */
/* int len how many datas are to we send */
/* int eoj set out of band flag if eoj set */
/* */
/* Return: number of bytes written or -1; */
/* */
/*******************************************************************/
int writeData(int fd, uc socketID, uc *buf, int len, int eoj)
{
uc cmd[6];
int wr = 0;
int ret = 0;
#if PTIME
struct timeval beg, end;
long dt;
#endif
static uc *buffer = NULL;
static int bLen = 0;
int cnt=0;
if ( debugD4 )
{
fprintf(stderr,"--- Send Data ---\n");
#if PTIME
gettimeofday(&beg, NULL);
#endif
}
len += 6;
if ( len > bLen )
{
if ( buffer == NULL )
buffer = (uc*)malloc(len);
else
buffer = (uc*)realloc(buffer, len);
if ( buffer == NULL )
return -1;
bLen = len;
}
cmd[0] = socketID;
cmd[1] = socketID;
cmd[2] = len >> 8;
cmd[3] = len & 0xff;
cmd[4] = 0;
cmd[5] = eoj ? 1 : 0;
memcpy(buffer, cmd, 6);
memcpy(buffer + 6, buf, len - 6 );
while( ret > -1 && wr != len )
{
#ifndef USE_LIBUSB
ret = devWrite(fd, buffer+wr, len-wr, d4WrTimeout);
#else
ret = mWrite(fd, buffer+wr, len-wr );
#endif
if ( ret == -1 )
{
/* DEC-10-2005: resource temporary not available, on 2.6
* kernel try again
*/
if ( errno == EAGAIN )
{
if (cnt < 600 ) /* time out = 1 minute */
{
ret = 0;
cnt++;
usleep(100000); /* wait 100 ms */
}
}
else
{
perror("write");
}
}
else
{
cnt = 0;
wr += ret;
}
}
if ( debugD4 )
{
# if PTIME
gettimeofday(&end, NULL);
dt = (end.tv_sec - beg.tv_sec) * 1000000;
dt += end.tv_usec - beg.tv_usec;
# endif
fprintf(stderr,"Send: ");
for ( ret = 0; (wr > 0) && (ret < ((wr > 50) ? 50 : wr)) ; ret++ )
fprintf(stderr,"%02x ", buffer[ret]);
fprintf(stderr,"\n ");
for ( ret = 0; (wr > 0) && (ret < ((wr > 50) ? 50 : wr)) ; ret++ )
fprintf(stderr,"%c ", isprint(buffer[ret])&&!isspace(buffer[ret])?buffer[ret]:' ');
fprintf(stderr,"\n");
# if PTIME
fprintf(stderr,"Write time %5.3f s\n",(double)dt/1000000);
# endif
}
if ( wr > 6 )
wr -= 6;
else
wr = -1;
return wr;
}
/*******************************************************************/
/* Function readData() */
/* Convenience function */
/* give credit and read then the expected datas */
/* Input: int fd file handle */
/* uc socketID the destination socket */
/* uc *buf the datas to be send */
/* int len howmany datas are to we send */
/* */
/* Return: number of bytes written or -1; */
/* */
/*******************************************************************/
int readData(int fd, uc socketID, uc *buf, int len)
{
int ret;
/* give credit */
if ( Credit(fd, socketID, 1) == 1 )
{
/* wait a little bit */
usleep(1000);
ret = _readData(fd, socketID, buf, len);
return ret;
}
else
{
return -1;
}
}
/*******************************************************************/
/* Function clearSndBuf() */
/* Convenience function */
/* */
/* Input: int fd file handle */
/* */
/* */
/*******************************************************************/
void clearSndBuf(int fd)
{
char buf[256];
#ifndef USE_LIBUSB
while ( devRead(fd, (unsigned char*)buf, sizeof(buf), d4RdTimeout) > 0 )
;
#else
while ( mRead(fd, (unsigned char*)buf, sizeof(buf) ) > 0 )
;
#endif
}
#if 0 /* implementation later ? */
int InitReply(int fd)
{
uc buf[20];
initReply_t cmd;
cmd.head.psid = 0;
cmd.head.ssid = 0;
cmd.head.lengthH = 0;
cmd.head.lengthL = 9;
cmd.head.credit = 1;
cmd.head.control = 0;
cmd.head.command = 0x80;
cmd.head.result = 0; /* put the correct value here, 0,1,2 or 0x0b */
cmd.revision = 0x10;
}
int ExitReply(int fd)
{
replyHeader_t cmd;
cmd.psid = 0;
cmd.ssid = 0;
cmd.lengthH = 0;
cmd.lengthL = 7;
cmd.credit = 1; /* always ignored */
cmd.control = 0;
cmd.command = 0x88;
cmd.result = 0x0; /* put the correct value here always 0 */
}
int Error(int fd)
{
char
error_t cmd;
cmd.head.psid = 0;
cmd.head.ssid = 0;
cmd.head.lengthH = 0;
cmd.head.lengthL = 0x0a;
cmd.head.credit = 0;
cmd.head.control = 0;
cmd.head.command = 0x7f;
cmd.epsid = psid;
cmd.essid = ssid;
cmd.ecode = 0x80; /* + 1...7 */
}
int GetSocketIDReply(int fd, uc socketID)
{
/* the service name may not be longer as 40 bytes */
int len = sizeof(replyHeader_t) + 1 + strlen(serviceName);
uc buf[100];
replyHeader_t *cmd = buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = len & 0xff;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 0x89;
cmd->result = 0; /* put the correct vale here 0 or 0x0a */
buf[sizeof(cmdHeader_t)] = socketID;
strcpy(buf+1+sizeof(cmdHeader_t), serviceName);
}
int GetServiceName(inf fd, uc socketID)
{
int rd;
uc buf[100];
cmdHeader_t *cmd = buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = 8;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 0x0a;
buf[sizeof(cmdHeader_t)] = socketID;
}
/* as GetSocketIDReply but with command 0x8a instead 0f 0x89 */
int GetServiceNameReply(inf fd)
{
/* the service name may not be longer as 40 bytes */
int len = sizeof(replyHeader_t) + 1 + strlen(serviceName);
uc buf[100];
replyHeader_t *cmd = buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = len & 0xff;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 0x8a;
cmd->result = 0; /* put the correct vale here 0 or 0x0a */
buf[sizeof(replyHeader_t)] = socketID;
strcpy(buf+1+sizeof(replyHeader_t), serviceName);
}
int CreditReply(int fd, uc socketID, int credit)
{
uc buf[100];
replyHeader_t *cmd = buf;
cmd->psid = 0;
cmd->ssid = 0;
cmd->lengthH = 0;
cmd->lengthL = 0x0b;
cmd->credit = 1;
cmd->control = 0;
cmd->command = 0x83;
buf[sizeof(replyHeader_t)] = socketID;
buf[sizeof(replyHeader_t)+1] = socketID;
}
#endif
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